Zero-Dimensional Energy Balance on a High Density Field-Reversed Configuration

FRCs have been created in the Field-Reversed Experiment with Liner (FRX-L) with density 2-4 x 10$^{22}$ m$^{-3}$, total temperature 300-400 eV, and lifetime on the order of 10 $\mu $s. We will present results of an energy balance on this high-density FRC using the method of Rej and Tuszewski (Phys. Fluids 27, p. 1514, 1984). This will include radiated energy measurements from an end-on wide-view bolometer, average pressure balance data from B-dot magnetic pick-up loops and magnetic flux loops, and profile information from a multichord interferometer. We expect conduction and convection losses to change compared to lower density experiments, due to the high-collisionality regime of these FRCs. Supported by DOE OFES contract W-7405-ENG-36.